David Mech, PhD (Former Employee)
Science and Products
Filter Total Items: 405
Patterns of prey selection by wolves in Denali National Park, Alaska Patterns of prey selection by wolves in Denali National Park, Alaska
The patterns of selection by wolves (Canis lupus) preying on moose (Alces alces), caribou (Rangifer tarandus), and Dall sheep (Ovis dalli) in Denali National Park and Preserve, Alaska were studied from 1986 through early 1992. Wolves and their prey are legally protected or relatively unharvested in most of the area, and wolf numbers doubled during the study. Based on remains of 294 moose...
Authors
L. David Mech, T.J. Meier, John W. Burch, Layne G. Adams
Assessing animal condition, nutrition, and stress from urine in snow: A critical view and response Assessing animal condition, nutrition, and stress from urine in snow: A critical view and response
No abstract available.
Authors
D. Saltz, Gary C. White, R.M. Bortmann, G. D. DelGiudice, M.R. Riggs, L.D. Mech, U.S. Seal
Summer movements and behavior of an Arctic wolf, Canis lupus, pack without pups Summer movements and behavior of an Arctic wolf, Canis lupus, pack without pups
A pupless arctic Wolf pack (two adults, three yearlings) studied 5-30 July 1993 on Ellesmere Island, Northwest Territories, traveled nomadically around an area >381 km2 but the alpha pair sometimes left the yearlings at a rendezvous site. All pack members hunted Arctic hares. The alpha pair sometimes fed the yearlings, the alpha male doing so more than the alpha female.
Authors
L.D. Mech
[Book review] Wolves, Bison and the Dynamics Related to the Peace-Athabasca Delta in Canada's Wood Buffalo National Park, by L. N. Carbyn, S. M. Oosenbrug, and D. W. Anions [Book review] Wolves, Bison and the Dynamics Related to the Peace-Athabasca Delta in Canada's Wood Buffalo National Park, by L. N. Carbyn, S. M. Oosenbrug, and D. W. Anions
No abstract available.
Authors
L.D. Mech
Undernutrition and serum and urinary urea nitrogen of white-tailed deer during winter Undernutrition and serum and urinary urea nitrogen of white-tailed deer during winter
Direct, practical means of assessing undernutrition in deer (Odocoileus spp.) and other ungulates during winter are needed in areas of research and management. We examined the relationship between mass loss and serum urea nitrogen (SUN) and urinary urea nitrogen:creatinine (U:C) in captive white-tailed deer (O. virginianus). During 4 February-5 May 1988, we maintained 7 adult white...
Authors
Glenn D. DelGiudice, L. David Mech, Ulysses S. Seal
Buffer zones of territories of gray wolves as regions of intraspecific strife Buffer zones of territories of gray wolves as regions of intraspecific strife
The locations of 22 territorial gray wolves (Canis lupus) killed by conspecifics in northeastern Minnesota were analyzed in a study involving radio-telemetry from 1968 through 1992. Twenty-three percent of the wolves were killed precisely on the borders of their estimated territories; 41%, within 1.0 km (16% of the radius of their mean-estimated territory) inside or outside the estimated...
Authors
L.D. Mech
The howling: Dealing with the wolf boom The howling: Dealing with the wolf boom
No abstract available.
Authors
L.D. Mech
Nutritional restriction and acid-base balance in white-tailed deer Nutritional restriction and acid-base balance in white-tailed deer
We examined the effect of progressive nutritional restriction on acid-base balance in seven captive, adult white-tailed deer (Odocoileus virginianus) from 4 February to 5 May 1988 in north central Minnesota (USA). Metabolic acidosis was indicated by low mean blood pH (7.25 to 7.33) in deer throughout the study. Mean urinary pH values declined (P = 0.020) from a mean (±SE) baseline of 8.3...
Authors
G. D. DelGiudice, L.D. Mech, U.S. Seal
A single deer stands-off three wolves A single deer stands-off three wolves
The first record of a deer (Odocoileus virginianus) standing off three wolves (Canis lupus) is documented by an aerial observation in northeastern Minnesota.
Authors
Michael E. Nelson, L. David Mech
Regular and homeward travel speeds of arctic wolves Regular and homeward travel speeds of arctic wolves
Single wolves (Canis lupus arctos), a pair, and a pack of five habituated to the investigator on an all-terrain vehicle were followed on Ellesmere Island, Northwest Territories, Canada, during summer. Their mean travel speed was measured on barren ground at 8.7 km/h during regular travel and 10.0 km/h when returning to a den.
Authors
L.D. Mech
Wolf and bear predation on white-tailed deer fawns in northeastern Minnesota Wolf and bear predation on white-tailed deer fawns in northeastern Minnesota
Whitetailed deer (Odocoileus virginianus) fawn mortality was studied during the summers of 1989 and 1990 in northeastern Minnesota. Estimated pooled mortality rates for 21 radio-tagged fawns were 0.44 for the May-June, 0.13 for the July-October, and 0.51 for the May-October intervals. Predation accounted for all mortalities, with wolves (Canis lupus) responsible for 51% of them and black...
Authors
K. E. Kunkel, L.D. Mech
Science and Products
Filter Total Items: 405
Patterns of prey selection by wolves in Denali National Park, Alaska Patterns of prey selection by wolves in Denali National Park, Alaska
The patterns of selection by wolves (Canis lupus) preying on moose (Alces alces), caribou (Rangifer tarandus), and Dall sheep (Ovis dalli) in Denali National Park and Preserve, Alaska were studied from 1986 through early 1992. Wolves and their prey are legally protected or relatively unharvested in most of the area, and wolf numbers doubled during the study. Based on remains of 294 moose...
Authors
L. David Mech, T.J. Meier, John W. Burch, Layne G. Adams
Assessing animal condition, nutrition, and stress from urine in snow: A critical view and response Assessing animal condition, nutrition, and stress from urine in snow: A critical view and response
No abstract available.
Authors
D. Saltz, Gary C. White, R.M. Bortmann, G. D. DelGiudice, M.R. Riggs, L.D. Mech, U.S. Seal
Summer movements and behavior of an Arctic wolf, Canis lupus, pack without pups Summer movements and behavior of an Arctic wolf, Canis lupus, pack without pups
A pupless arctic Wolf pack (two adults, three yearlings) studied 5-30 July 1993 on Ellesmere Island, Northwest Territories, traveled nomadically around an area >381 km2 but the alpha pair sometimes left the yearlings at a rendezvous site. All pack members hunted Arctic hares. The alpha pair sometimes fed the yearlings, the alpha male doing so more than the alpha female.
Authors
L.D. Mech
[Book review] Wolves, Bison and the Dynamics Related to the Peace-Athabasca Delta in Canada's Wood Buffalo National Park, by L. N. Carbyn, S. M. Oosenbrug, and D. W. Anions [Book review] Wolves, Bison and the Dynamics Related to the Peace-Athabasca Delta in Canada's Wood Buffalo National Park, by L. N. Carbyn, S. M. Oosenbrug, and D. W. Anions
No abstract available.
Authors
L.D. Mech
Undernutrition and serum and urinary urea nitrogen of white-tailed deer during winter Undernutrition and serum and urinary urea nitrogen of white-tailed deer during winter
Direct, practical means of assessing undernutrition in deer (Odocoileus spp.) and other ungulates during winter are needed in areas of research and management. We examined the relationship between mass loss and serum urea nitrogen (SUN) and urinary urea nitrogen:creatinine (U:C) in captive white-tailed deer (O. virginianus). During 4 February-5 May 1988, we maintained 7 adult white...
Authors
Glenn D. DelGiudice, L. David Mech, Ulysses S. Seal
Buffer zones of territories of gray wolves as regions of intraspecific strife Buffer zones of territories of gray wolves as regions of intraspecific strife
The locations of 22 territorial gray wolves (Canis lupus) killed by conspecifics in northeastern Minnesota were analyzed in a study involving radio-telemetry from 1968 through 1992. Twenty-three percent of the wolves were killed precisely on the borders of their estimated territories; 41%, within 1.0 km (16% of the radius of their mean-estimated territory) inside or outside the estimated...
Authors
L.D. Mech
The howling: Dealing with the wolf boom The howling: Dealing with the wolf boom
No abstract available.
Authors
L.D. Mech
Nutritional restriction and acid-base balance in white-tailed deer Nutritional restriction and acid-base balance in white-tailed deer
We examined the effect of progressive nutritional restriction on acid-base balance in seven captive, adult white-tailed deer (Odocoileus virginianus) from 4 February to 5 May 1988 in north central Minnesota (USA). Metabolic acidosis was indicated by low mean blood pH (7.25 to 7.33) in deer throughout the study. Mean urinary pH values declined (P = 0.020) from a mean (±SE) baseline of 8.3...
Authors
G. D. DelGiudice, L.D. Mech, U.S. Seal
A single deer stands-off three wolves A single deer stands-off three wolves
The first record of a deer (Odocoileus virginianus) standing off three wolves (Canis lupus) is documented by an aerial observation in northeastern Minnesota.
Authors
Michael E. Nelson, L. David Mech
Regular and homeward travel speeds of arctic wolves Regular and homeward travel speeds of arctic wolves
Single wolves (Canis lupus arctos), a pair, and a pack of five habituated to the investigator on an all-terrain vehicle were followed on Ellesmere Island, Northwest Territories, Canada, during summer. Their mean travel speed was measured on barren ground at 8.7 km/h during regular travel and 10.0 km/h when returning to a den.
Authors
L.D. Mech
Wolf and bear predation on white-tailed deer fawns in northeastern Minnesota Wolf and bear predation on white-tailed deer fawns in northeastern Minnesota
Whitetailed deer (Odocoileus virginianus) fawn mortality was studied during the summers of 1989 and 1990 in northeastern Minnesota. Estimated pooled mortality rates for 21 radio-tagged fawns were 0.44 for the May-June, 0.13 for the July-October, and 0.51 for the May-October intervals. Predation accounted for all mortalities, with wolves (Canis lupus) responsible for 51% of them and black...
Authors
K. E. Kunkel, L.D. Mech